bacon



G. M. BACON.

. CENTRIFUGAL SEPARATOR.

' I APPLICATION FILED FEB- 19. I911. 1,321,353.

Patented NW. 11, 1919.

6 SHEETS-SHEET I.

Jnvwnhz GenraM.Ba c:cm

G. M. BACON.

CENIRIFUGAL SEPARATOR.

APPLICATION FILED FEB. 19. 1917.

Patented NOV. 11, 1919.

6 SHEEIS-SHEET 2.

Swan Ho e Eemr'gEM.Bacnn G. M. BACON.

CENTRIFUGAL SEPARATOR.

APPLICATION FILED FEB. I9, 1917.

1,321,353. Patented Nov. 11,1919.

6 SHEETS-SHEET 3.

Banger [Bacon G. M. BACON.

CENTRIFUGAL SEPARATOR.

APPLICATION FILED 8.19.1917.

Patented Nov. 11, 1919.

6 SHEETS-SHEET 4.

gwuenfom I: D T'L George M.BE.

G. M. BACON.

CENTRIFUGAL SEPARATOR.

APPLICATION min FEB. 19, 1911 1,32 1,35 3. 1 Patented Nov. 11,1919.

. 5 SHEETS-SHEET 5.

.E'Jaccm.

G. M. BACON.

CENTRIFUGAL SERARATOR. APPLICATION FILEDFEB. 19. 1911.

Patented N 0v. 11, 1919.

6 SHEETS-SHEET 6.

Centrifugal Separators, of which the folemcee-PA N OFFICE.

" I ielfonen-kfinacon, on em crrr, UTAH.

To all whom concern:

Be it known that I, Gnonsn MrBAcon, a citizen of the United States, and a reeldent of Salt Lake City, in the county of- Salt Lake and State of Utah, have invented a certain new and useful Improvement in lowing is a specification.

The present invention relates to centrifugal separators, of that type which may be used for removing pulp and slime rom water in'the process of dressing ore, and for other uses which will be understood from depositing the substances against the peripheral wall of the body, the invention providing means for segregating portions of the deposited material, and subsequently discharging the segregated portions without dlsturbing the accumulation of additional'particles or substancesagainst the inner peripheral wall of the body.

: "parts of the same in elevation, of a centrifu gal separator constructed according to the wherein:

The above, and various other objects and advantages of this invention will be in part described, and in part understood, from the following detaileddescriptionof the presaccempanying drawings,

ent preferred embodiment, the same being illustrated in the Figure'l is" a view in vertical section, with presentin'vention. '-3

Fig.2 is'a top lan view of the same.

Fig. 3 is a -detail, section takenon the line 33 of Fig. l-th-ro'ugh the lower portion of the body of the separator.

Fig. 4 is a detail fragmentary view in secthrough the lower tion taken transversely end of said body portion.

Fig. 5 is a detail fragmentary perspective view of the cam employed.

Fig. 6 is a horizontal section taken throu' h the body portion of the separator, partly in Specification-of lietters Patent. f lpplication filed Iebruarvm, 1917. Serial No.

'tion shown in Fig. '6. Flg. 10 is a view in vertical section taken of the separator,

, adjusted emcee; surnames.

Patented Nov. 11, 1919.

elevation, showing the parts 'adjustedfor rece ving the-material to be separated.

Fig. 1s a fragmentary view in section taken through a peripheral :portion of the body of the separator, disclosingthe same adusted for segregating portions of the mate- -ria1 deposited against the inner wall of the body.

Fig. 8 is a similar view disclosing the parts adjusted for discharging the segregated portions of the deposited material. 1 Fig. 9 is a similar view disclosingthe segregating pockets closed and the parts in posltion to be advanced into the normal posi-I through .amodified form of the centrifugal separator, parts of the same being shown in elevation.

Fig. 11 is a horizontalview in section through the body portion of the modified form of Fig. 10, showing the modified form of material segregating means closed to the interior of the body. Fig. 12 is a bottom plan view of the body disclosing partly in full lines, and partly diagrammatically, the

means for operating the material segregat- I ing valves. A 1g. '13 is a fragmentary detail view, enlarged, of a eripheral portion of the body of the modi ed form of separator, disclos-- I ing the valves adjusted to receive -a portion of the deposited material.

Fig. 14 is a similar view disclosing the valve closed to' the interior of the body. Fig. 15 is-ali'ke'view showing the valves to discharge 'the lsegregated terial. r I I Fig. 16 isa detail, enlarged, sectionaliview .taken through one of the valves ofthe inedified form. v Referring to these drawings, wheremllke parts are designated by similar characters of reference throughout-[the several. views,

20 designates a hollow cylindrical casing drum provided with a substantially cyiniir'ieal core or hub 21 having in one end a plurality of radially extending inlet pas sages 22 and at its opposite end a I plurality ;;of radially extending outletjgpassages ,23. The passages22 and "23 open to the interior Y .of the drum The lower end of the hub '21 provided, gwith' a supporting sleeve 24 'mounted at its lower extremity in a stepbearing 25, and is provided upon its upper end with an open-ended cylindrical projection 26. The sleeve 24 is in communication with the radial inlet openings 22, and the cylindrical projection 26 is in communication with the radially extending outlet openin s 23.

he peripheral wall of the drum or casing 20 is provided with a plurality of transversely extending closely-spaced-apart slots or openings 27, and the intervening slats or bars have oppositely beveled inner edges 28 for deflecting material through the slots 27. A transparent panel 29 may be mounted in the upper side of the drum or casing 20, through which may be observed the accumulations of the materials which are deposited against the peripheral wall of the drum. A feed. pipe 30 projects upwardly through the hearing or base 2-5 into the sleeve 24 and is adapted to convey the suspended particles or material to be separated. An outlet pipe 31 is arranged over the drum or casing and projects into the hollow projection 26. The outlet pipe 31 may be provided with a laterally extending discharge nozzle 32 for carrying off the lighter substances from the interior of the casing or drum 20. The cylindrical projection 26 of the casing is provided with a relativel large beveled gear 33 which meshes with a pinion 34 .mounted on the inner end of a drive shaft 35 which projects radially from one side of the machine, and which is journaled in a suitable bracket 36. The shaft 35 may be driven in any suitable manner, and at the desired speed.

The passage of the material from the drum or casing is regulated by means of a pair of ring valves 37 and 38. ,The rings 37 and 38 extend from top to bottom of the drum 20, and are provided with through passages or slots 39 and 40 which correspond in width tothat of the slots 27 formed in the peripheral wall of the drum. The ring 37 is relatively thick as compared with the thickness of the wall of the drum 20 and the outer ring 38 to provide relatively deep for adjustment upon the drum or casing 20 to arrange the three sets of openings 27, 39 40 in radial alinement.

The inner ring 37 is provided upon its jlewer edge with an inturned flange 41 which fies against the underside of the drum or casing 20, and the outer ring 38 is provided with an inturned flange which lies beneath the flange 41, and which has its inner edge flush with the same. The flanges 41 and 42 a are provided with like rows of ratchet teeth 43 and 44 which register, and which extend in an opposite direction from that in which the machine is-adapted to be rotated. Thecasing or drum 20 is provided at its bottom, and preferably at opposite sides, with pairs of pawls 45 and 46, each pairbeing pivotally mounted upon a pin-47 which pipojects down wardly from the'drum 20. he pawls 45 are arranged in the-plane of the upper flange 41, and the lower pawls 46 are arranged in the lane of the lower flange 42. Dogs 48 are iiingedly mounted uponthe outer ends of the pawls 45 and 46, and are normally held by springs 49 in engagement with the The upper end of the hub 52'is enlarged to provide a cam 53 provided with diametrically opposed lobes 54, 55, and 56. The lobes 54 are arranged at substantially ninety degrees apart upon the periphery of the cam 53, and the lobes 55 and 56 are arranged between opposed pairs of the lobes 54, leaving diametrically opposed relatively smooth sides to the cam 53 between the opposite pairs of the lobes 54. i The lobes 54 are relatively wide so as to simultaneously engage the heels 50 of both of the pawls 45 and 46, while the lobes 55 and 56 are relatively narrow and are adapted to engage the heels 50 of the lower pawls 46 only. Springs 57 are secured to the underside of the drum 20 at one end and engage the outer or radially extending extremities of the pawls 45 and 46 to normally and yieldingly hold the heels 50 thereof against the cam 53. The lobes of the cams 53 are of suflicient height to advance the pawls 45 and 46 sufliciently to step the rings 37 and 38 one tooth forwardly upon each impulse of the adjacent pawl. The teeth 43 and 44 are spaced-apart a distance equal to the spaces between the slots 39 and .40 in the rings to alternately register the slots thereof with each other, and with the slats or closed bars lying between the slots. The inner ring 37 terminates at its upper edge flush with the top of the casing or drum 20, and the outer ring 38 also terminates in the plane of the top of the casing 20, but is provided at said upper edge with an annular angular strip or beading 58 secured to the outer face of the ring 38 and overhanging the upper edge of the same. A supporting strip 59 is placed annularly over the upper edges of the rings 37 and 38, and in slightly overlapping relation upon the top of the drum 20. The outer edge of the strip 59 projects beneath the bead 58-to support the tated by means of a pinion 62 which meshes with the gear wheel 51 and which is carried upon a second shaft 63 projecting radially beneath the body of the machine. The shaft 63 is journaled. in suitable bearings 64, a pair of the latter being arranged in spacedapart relation'adjacent to the outer end of the shaft 63. Between the pair'of bearings 64 the shaft 63 is. provided with a doublefaced friction wheel 65 against the opposite sides of which bear apair of friction rollers 66 mounted for longitudinal adjustment upon a pair of spindles 67 The spindles 67 are mounted in bracket arms 68 which are secured to said pair of bearings 64, and which be closely against theopposite sides of the wheel 65. v

The spindles 67 may be provided at their inner ends with relatively coarse screwthreaded sleeves 69, having worm wheels 70, the latter meshing with Worms 71 which are journaled in bracket arms 68 and provided upon adjacent ends with apair of intermeshing gear wheels 72 for causing the worms 71 to turn simultaneously. threaded on the portions 69 on the spindles and are adapted to advance the rollers 66 across the opposite faces of the friction gear 65 to vary the speed of rotation of the" latter.

The main drive shaft 35 is provided with a pair of spaced-apart friction disks 74 which bear at their inner opposite faces against the outer sides of the rollers 66, the latter being thus interposed between the friction disks 74 and the double-faced gear wheel 65. Rotation'of the shaft-35 is imparted to the rollers 66, which in turn rotate the friction Wheel to turn the-shaft 63 in the same direction as that in which the main shaft 35 is driven. Adjustment of the friction rollers 66 varies the relative speeds of rotation of the shaft 35 and the shaft 63 so that the cam 53 may be driven at practically any desired rate of speed with respect to the body or drum of the machine. for actuating the pawls 45 and 46. In operation of the machine, the ring valves 37 and 38 are adjusted into theposition shown in Fig. 6, and wherein the pockets or relatively large .slots 39 are open to f 65 the interior of the drum :20. The outer ends Sleeves 73 are ofthese pockets 38 are closed by the slats of the outer ring 38 so that material may pass from the interior of the drum into the pockets 39 and be held therein. When the rings 37 and 38 are in this relative position of adjustment, the pawls45 and 46 are adjusted as disclosed and shown in Fig. 3, but have the heel portions 50 thereof in position immediately subsequent tdengagement with the last lobe 54 of the series. The

suspended material is fed through the tube 30 upwardly into the drum 20, and is separated by centrifugal force, whereby the heavier particles of material is deposited against the peripheral wall of the drum. The lighter particles, or fluid-suspending medium, is forced out of the drum through the radial openings 23 and discharged through the spout 32. The heavier material which is deposited against the wall of the drum fills the pockets 39. When the desired amount of the heavier material is deposited against the wall of the drum, which may be ascertained by inspecting the interior of the drum through the transparent panel 29, the rollers 66 may be adjusted to decrease the relative speed of rotation of the shaft 63 to effect the relative movement of the-cam 53.

This relative backward movement of. the cam 53 brings the adjacent lobe 54 into contact with the heels 50 of both of-the p'awls 45 and 46 to simultaneously advance the rings 37 and 38 one step, and thus entirely close the pockets 37 at their inner and outer ends, as shown in Fig.7. The ring 37 thus cuts cOfi or segregates a certain portion of the deposited 'material, and when adjusted into the position shown in Fig. 7, the drum or casing 20 prevents a further outward feeding of the deposited material. The cam 53 now brings the lobes 55 into engagement with the heel of the lower pawl 46 and actuates the same to advance the outer ring 38 one step to register the slots 40'thereof with the pockets 39 of the inner ring. By centrlfugal action, the segregated material which is held in the pockets 39 is now dlscharged into the chute 60.

The third lobe 56 of the cam now engages the heel portion 50 of the lower pawl 46 to advance the outer ring 38 a second time and thus move the openings 40 thereof out of register with the pockets 39. This closes the outer sides of the pockets 39, and when the second lobe 54 simultaneously engages the pawls 45 and 46, the rings are advanced fromthe position shown in Fig. 9, into them normal position, as shown in Fig. 6. The

cylindrical space of the cam 53 now passes beneath the heel portions of the pawls and 126i therings 37 and 38 remain undisturbed for a length. of time suflicient to fill the pockets 37 from the accumulated mass to be deposited against the periphef'al wall of the drum 20. The same cycle of operation takes place 130 cam 53 be correspondingly shaped to position the lobes at the desired distances apart, and to provide for the smooth portions of the cam.

It will thus be seen, that after a predeter mined amount of material has been deposited against the wallof the drum, the cycle of operation is continuous and the separation may be carried on uninterruptedly, as

' long as the supply of the suspended material lasts, and until the power is shut ofi.

In the modified form of the inventieii, disclosed in Figs 10 to 16, inclusive, the hub 24L of the lower bevel gear wheel 51 is provided upon its upper end with a large spur v gear wheel 74 which is arranged immedi- 'ately beneath the drum or casing'20. The

peripheral wall of the casing 20 is provided with closely spaced-apart cylindrical openings or bearings which. open into the interior'of the drum 20, and which 0 en to the outer side of the same. Valves rotary type, are mounted in these openings in the peripheral wall of the casin 20 and are provided with depending stems 6 which carry on their lower ends pinions 77 arranged in planetary fashion about the spur gear 74. 7

Each valve 75 is'in the form of a cylindrical block provided in its opposite sides with longitudinally extending pockets or recesses 78 which, when the valve 75 is rotated, are

alternately brought into register with theinner wall of the casing 20 to receive a charge of the deposited material therefrom,

\ and which are subsequently turned into position to open outwardly from the wall of the casing. It will be noted that these'recesses or pockets 78 are in the form of concavities providing relatively sharp cutting edges at the opposite sides of the pockets to shear off the material which is segregated or collected in the pockets from the deposited mass within the drum. 1

The spur gear 74 may be adjusted as to its relative speed'of rotation with respect to the drive shaft 35 by the same means, and in the same manner as the cam 53 of the preferred form may be adjusted. Thus, the pinions with their valves 75 may be turned at the desired speed to register the pockets 78 with the interior of the drum or casing 20 as shown in Fig. 13, to subsequently turn the valves 75 to cut off the segregated material in the pockets 78, and'to finally dispose the pocket with the material therein at the outer side of the casing to discharge the material by centrifugal force during the rotation of the casing or body of the device. This latter 5, or the I position is disclosed to advantage in Fig. 15. It will be noted that by the provision of the valves 75, that as one pocket is discharging the material therefrom, the opposite pocket is receiving a charge of the material from the casing 20. Thus, the action is possibly more rapid than with the construction shown in the preferred form, the latter form being adapted particularly where it is desired to cut off relatively thick or heavy material which is deposited against the peripheral wall of the casing.

In both forms of the invention the material may be continuously deposited against the wall of-the drum,and the material is prevented from being discharged too rapidly through the drum by cutting off the flow of the material from the drum and discharging the material in relatively small quantities.

It is of course understood that various changes and modifications may be made in the details of construction of the abovespecificially described forms of the invention without departing from the spirit 2. In "a centrifngal separator, the combination of a rotatable body, a gear con nected to the body, valves in the wall of the. body, operating means for the valves including a second gear, shafts for said gears, means for driving one of the shafts, and an adjustable connection between the shafts for transmitting motion at relatively variable speeds to the shafts.

3. In a centrifugal separator, the combination of a' rotatable body, means for turning said body, a plurality of outlet valves arranged at the periphery of the body, rotatable means connected to said valves for actuatingthe same, and an adjustable connection between said body turning means and said valve-adjusting means for varying the relative speeds of rotation of the body and the valve-adjusting means to actuate the valves at predetermined times.

4. In a centrifugal separator, the combination of a rotatable body, a gear connected to the body, a drive shaft, a pinion on,

the drive shaft meshing With said gear, a pair of spaced-apart friction disks carried by said drive shaft, valved mechanism arranged at the periphery of the body, valve operating means arranged ad acent to the second shaft, a pinion on the second shaftengaging the second car wheel, a doublefaced friction gear w eel mounted on said second shaft and projecting into overlappin of the drive shaft, and adjustable rollers arranged between the opposite sides of the friction wheel and said friction disks for driving the second shaft from the first and varying the relative speed of rotation of the same.

5. In a centrifugal separator, the .combination of a rotatable body, a gear connected .to the top ofv the body ranged at the periphery of the operating means arranged below the body and including a second gear, a drive shaft connected to the first gear, a second shaft relation between. said friction disks valves arbody, valve-.

connected to, the second gear, and an adjustable connection between said shafts for driving the same at predetermined relative speeds of rotation for actuating said valves during the rotation of the body.

6. In a centrifugal separator, the combinationof a rotatable body, a plurality of valves rotatably mounted in the peripheral portion of the body, a gear arranged in concentric relation to the body and adapted to rotate independently thereof, and a plurality of pinions-carried upon said rotatable valves and engaging said gear to be actuated the1eby,.said valves having pockets in theiropposite sidesadapted to receive material from the body and discharge the same from the outer side thereof.

GEORGE M. BACON. 

